If you know the Establishment code and your PF number, it should be easy for you to check your PF account online on the portal. Once you are able to view it, you will know the balance and can proceed to fill in Form 19 & 10C with the necessary details and visit the nearest SBI Bank. Have the forms attested by the Bank Manager and then meet the Accounts Officer of your concerned group (to which your company belongs) at the Regional PF Office where your company remits PF.
This process may be a bit tedious and time-consuming, but I have heard of several cases being successfully resolved in this manner. I encourage you to give it a try and update us on the outcome.
Regards, A.B.